Actually 1/8-28 BSPP is 1/8-28 British Standard Pipe Parallel, BSPT is British Standard Pipe Tapered, many machines and components made in Europe use BSPT for fluid couplings. BSP threads are 55 Deg. included Whitworth.I'm assuming you mean 3/8-28, parts turned out nice. So that's what an old Hardinge looks like, also noticed 5 chucks on the turret and 5 chuck keys on the bench.
We are not a production shop, I use what drill chucks are lying about, different chucks different keys. This can be annoying as one may imagine.
That Hardinge lathe could well be 40+ years old, a most excellent machine and is nearly silent at 4000 RPMs, you could buy 10 import lathes today for what that machine cost in 1970.
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